Metal-molding apparatus



H. C. ZENKE METAL MOLDING APPARATUS Filed Nov. 14 1921 s Sheet-Shet 1INVENTOR I p QM g /c July 17, 1923- H. C. ZENKE METAL MOLDING APPARATUSFiled Nov. 14 1921 3 Sheets-Sheet 3 i412 l(NVENI /W a 4M [M 1.4%, ATTQRY5. I

July 17, 1923- 1.462.186

H. C. ZENKE METAL MOLDING APPARATUS Filed Nov. 14], 1921 5 Sheets-Sheet5 I fivENT-QRf v Patented July 17, 1923.

HENRY e. ZE-NKE, "or nronmoiv'n HILL, n w ironic.

METAL-Mermai APrAn 'Tes.

Application filefi Novemher 14, 1921; serial no. slams.

To all whom it may can Gem:

Be it known that I, HENRY C. ZEN-Km a citizen of the United States,residing in Richmond Hill, county of Queens, State of New York. haveinvented an Improvement in Metal-lvlolding Apparatus (Case 7 of whichthe following is a specification.

This invention relates to apparatus for molding metals and moreparticularly to ap= paratns for casting type lead, such as is used inthe printing art, into pigs.

One of the objects of this invention is to provide a simple andpractical metal mold ingapparatus by means of which type metal, forexample, may be cast into pigs of con venient size and shape,'such forexample as may be readily fed to type casting machines, and in whichsimplicity of construction is combined with facility of operation whenin use.

Another object is to provide a practical and effective means forsecuring the severalparts of the molding apparatus together forreceiving the molten metal.

Another objeet'is to provide a metal molding apparatus from which thecast pigs may be readily ejected with a minimum efiort and in which theseparation of the several parts of the molding apparatus to permit theejection of the pigs may be efiected in a simple manner and with aminimum expenditure of manual effort.

Other objects will be in part obvious or in part pointed outhereinafter,

To embody my invention I have provided a central upright standard withmold members hinged thereto with a clamping device for securing theparts together during the opened.

process of molding and means for ejecting the molded pigs of metal whenthe mold is In. the accompanying drawings in which is shown anembodiment of my invention.'

Figure 1 is a perspective view of the molding apparatus showing theseveral parts in assembled but open position;

Figure 2 is a perspective view showingthe several parts of the moldingapparatus in closed position and looked together in readi ness toreceive the molten metal;

Figure 3 is a plan view on an enlarged scale of the clamping device forholding and locking the several parts in closed position; and p Figure 4isa partial sectional view on the line 14 of Fig. 3,-showing the detailsof the toggle embodied in the loc-kingdevice ot F1n'. 3; and I Figine -5is a partial "sectionalview on the line 5 5 of Fig. 1 on enlarged scalevided with two oppositely extending arms 14- and 15, each extending awayfrom the supporting member 10. To the upper end andup'on the oppositeside of the support ing member 10 there is secureda bracket 16 similarlypositioned and of similar construction as the bracket 13 so as toprovide two oppositely extending arms 17 and 18. The arms 14: and 17form a pair of supports for a mold member 19, at the upper end of whichthere are suitable outwardly extend ing arms 20 and 21, the outer endsof which are pivotally connected by means of the rod or pin 22 to theouter ends of the supporting arms 14 and 17 respectively A handlepreferably formed integral with the arm 20 ot the mold member 19, swingsthe mold member 19 about its pivotal suspension;

To the outer'e'nds of the other pair of arms 15 and 18 there issuspended another mold member 24 by suitable arms '25 and 26 and by thepin 27, a handle 28 forming an extension of the arm 26 being providedfor manually controlling the position of the mold member 24;. The moldmembers 19 and 24 are of substantially identical construction and aresuspended with respect togthe supporting member 10 insubstantiallyidentical manner as already set forth; Hence;

only one of the mold members 19 and 24 will be described in greaterdetail together with its associated operating mechanisms.- A

As may be clearly seen in Figs. 1 and 2, each mold member is preferablyprovided with two metal-receiving spaces or compartments,whosedimensions and shape are such as it is desiredto give the castpig.Thus the mold member 19 is provided with two metal-receiving spaces 29and 3Q and the the several views in the mold member 24 is shaped to formtwo spaces 31 and 32 adapted to give the pigs the desired conformation.The wall, such as the wall 33 in the mold member 19, which separates thetwo metal-receiving chambers is preferably cored out to provide at theexterior of the mold member a series of open recesses as 34, thus toincrease the surface exposed to the atmosphere and therefore to increasethe radiation of heat from the mold. Excessive masses of metal whichtend to retain heat are thus avoided in the construc tion of themold-forming parts and a more rapid cooling of the structure is thusattained.

Each face of the supporting member 10 has its surface raised as at 35 inan outline corresponding substantially to the outline of the inner endfaces of the wall-forming portions of the mold members 19 and 14. Theraised portions 35 of the supporting member 10 may thus be readilymachined or finished so that the correspondingly machined or finishededges of the wall-forming portions of the mold members 19 and 24 maysnugly contact therewith and form a metal-tight connection therebetween.The supporting member 10 is preferably cored out so that a supply ofcooling water may be circulated through its interior, as by means of thepipe connections 36 and 3' which may function as the inlet and outletrespectively.

By reason of the eccentric pivotal suspension of the mold members 19 and24 to the supporting member 10, as hereinbefore described, each moldmember will tend to swing in an outward direction or away from thesupporting member 10 and into the position shown in Fig. 1. This actiontakes place because the axis of suspension of each mold member ispositioned exteriorly of the vertical plane passing through the centerof gravity of each mold member and exteriorly also of the supportingmemberlO. In other words, the pivot point of each mold member ispositioned eccentrically with respect to the center of gravity of thecorresponding mold member. Each mold member 19 and 24 may he swunginward and into contact with the supporting member 10 by means of theoperating handles 23 and 28 respectively, thus to permit the supportingmember 10 to function as the closing side for each metal-receiving spaceor compartment in each of the mold members 19 and 24. In order, however,to hold temporarily each mold member 19 and 24 in the closed position soas to permit of the application of a suitable clamping device forlocking the several parts in closed position, I have provided anautomatically operating latch adapted. to hold each mold member inclosed position. As shown in Fig. 1, there is mounted at preferably thelower part of the end wall of the member 10 a pin 38 which is adapted tobe engaged by the hook portion or latch 39 on the inner end of a lever40 pivotally mounted at the lower exterior portion of each mold member19 and 24. The lever 40 is preferably secured to one end of ashaft 41mounted in the bearings 42 integrally formed'in a suitable housing 43,which may be mounted upon the exterior and lower portion of each moldmember in any suitable manner.

Each housing 43 is formed into two chambers 44, one for each of themold-receiving spaces in each mold member. In Fig 5 of the drawings isshowna vertical sectional view taken through one of the chambers 44 andit will be noted that to the shaft 41 there is secured an arm 45 adaptedto be contacted with by the pin 46 sliding in the end wall 47 of thehousing 44 and projecting through the outer wall of the mold member 19.A spring 48 surrounds the pin 46 and is interposed between the wall ofthe mold member 1.9 and a pin or collar 49 rigidly secured to the pin46. The spring 48 thus urges the pin 46 outwardly. A second pin orcollar 50 mounted at the upper end of the pin 46 and adapted to engagewith the inner face of the wall 47 of the housing 44 limits the uppermovement of the pin 46 in response to the action of the spring 48 so asto maintain the lower end face of the pin 46 substantially flush withthe interior face of the outer wall of the mold member 19.

The spring 48, however, also tends to ro tate the shaft 41 in acounter-clockwise direction, as viewed in Fig. 5, and hence tends tomaintain in an upper position the outer end of the lever 40 at which thehook portion or latch 39 is mounted. As each mold member 19 and 24 isswung inward into the closed position, as shown in Fig. 2, the latch 39on each mold member 19 and 24 will engage with the pin 38 and will beheld in engaged position by the action of the spring 43. The moldmembers 19 and 24 are thus held against the action of gravity in theclosed position by their respective latches'39.

In order to lock each mold member against the main supporting member 10which, as hereinbefore noted, thus forms the closing side of themetal-receiving spaces in the mold member, there is provided a clampingdevice comprising the yoke member 51 se cured at its central portion toa middle part of the end wall of the supporting member 10 by means of ahinge 52, more clearly shown in Fig. 3 of the drawings. The yoke 51 maythus be swung from the position shown in Fig. 1, in which it is out ofengagement with the several mold-forming parts, into the position shownin Fig. 2 in which the twomold members 19 and 24 with their commoninterposed supporting member 10 are adapted to be engaged by the severaldevices mounted in the ends of the yoke 51. One end of the yoke 51 isadapted to engage the moldmem ber 24 at .a substantially central pointtherein by the screw 53 threaded into the boss 54 formed in the one endof the yoke 52and substantially opposite a boss 55 in the opposite endof the yoke 51. 1 The boss 55 is bored out to provide a substantiallycylindrical guide for a plunger 56 whichis adapted to be moved towardor. away from the screw 54 in the opposite end of the yoke by means ofa'suitable toggle. This toggle (see Figs. 3 and 1) comprises the link 5!in pivotal engagement with the outer end of the plunger 56 and acomplementary -toggle-forming member comprising a pair of links 58pivoted upon the bolt 59 mounted on the boss 60. The link 57 ispivotally connected to the pair of links "58 by'a pin 61 which extendsthrough a yoke 62 whose upper end is bifurcated as at 63 to receive theoperating handle 64 pinned theretoby means of the pin 6-5. The operatinghandleea is suitably pivoted at its one end to the yoke 51 as at 66. Thetwo arms of-the lever'may be given any desired'proportion according tothe multiplying effect desired to be attained.

The mold members 19 and 2a having'been placed in the closed position bymeans of metal. the several parts are clamped'together may theirrespective operating handles 23 and 28 and having been held in suchclosed posi-, tion by their respective latches 39, the yoke 51 isthereupon swung into. the position shown in Fig. 2 by means of theoperating handle 64. Continued movement of the operating handle 64causes the operation of the toggle 5758 so to force the plunger 56inward. Themold members 19 and 24,

in engagement respectively with the plung F er 56 and the screw 53, aresecurely clamped and'locked against the supporting member 10 and theseveral parts are in readiness to receive. a charge of molten The degreeof tightness with which bereadily adjusted by means of the screw 53.forming one of the contacting parts of the clamping device, and it willbe noted that this adjustmentmay readily be made with respect to thetoggle-forming links 57 and 58 so that the toggle is straightened outand locked at the desired adjustment.

Upon the cooling and setting of the metal within the several moldreceiving spaces,-

the clamping device is unlocked and swung about its hinge 52 and i intothe position shown in Fig. 1. Themold members 19 and 24h, howeven'willbe. retained in-a closed position by reason of the action, ofthe latchesoperated bythe operator, causes such a rotation of the shaft 4-1 as willswing the latches 39 away from their respective pins 38 and permit theaction of gravity to become eflective to swing the mold members,

into the position shown in Fig. 1. The same movement of the shaft 31 byvirtue of the lever 61 is effective also to cause an inward movement ofthe pin 46, there being one for'each metal-receiving space ashereinbefore described, against the action of the spring 48. The pigcast within each space is thus dislodged from the wallsof the moldmembers 19 and 24 and is readily discharged therefrom and between theparts now inthe position shown in Fig. 1. It will be understood that therelease of the latches St and the ejecting movement of the pins 46 areinitiated by the same operation of the lever 67- and, furthermore, thatthe effort applied to the lever 67 is applied in such in swinging therespective mold members away from the main supporting member to permitthe discharge of the cast pigs.

In the embodiment hereinbefore .described, each mold member 19, and 24has been described as having two metalreceiv-.

direction as to assist the actionof gravity ing spaces, but it will beunderstood that a greater or smaller number of metal-receiving spacesmay be incorporated in each mold member. that irrespective of the numberof metalreceiving spaces employed, the upper open ends of the molds arein close proximity to is simple and practical and that a minimum amountof effort need be exerted in the manual operation thereof, thusbringing" Furabout convenience in manipulation. thermore, it will benoted that in this apparatus the several objects of this invention, aswell as many advantages, have been attained.

e As many possible embodiments may be madeof this invention and as manychanges might be made in the embodiment above set forth, it will beunderstood that all matter herein set forth is to be interpreted asillustrative and not in alimiting sense.

I claim as my invention: I

1.- In, apparatus of the character described,

in combination, a mold including two co operating and separable partsfor receiving a molten metal, means pivotally connecting said'parts,means tending to swing one of said parts about said pivotal connectingmeans and away from the other part, and an t will be noted in Fig. 2'

operating and separable parts torreceiving a molten metal, meanspivotally connecting said parts, means tending to swing one of saidparts about said pivotal connecting means and away "from the other part,an automatically operating latch for locking said parts together, andmeans for clamp-- ing said. two parts together. i

i. In apparatus of the character described, in combination, a moldincluding two cooperating and separable parts for receiving a moltenmetal, means pivotally mounting one of said parts with respect to theother of said parts whereby the action of gravity tends to swing saidpivotally mounted part tion of away from said other part, an automatically operative latch for locking said parts together against the actionof gravity, and means including a toggle for locking said partstogether. v

In apparatus of the character described, in combination, a moldincluding two separable and cooperating parts for receiving a moltenmetal, means for pivotally connectina one o't' said parts with respectto the other, means operative to swing said pivotally connected pertaway from the other, a latch for locking said parts together, manuallyoperative means for unlocking said latch, and means operative upon theoperation of said last mentioned means for dislocating the molded metalfrom said part.

6. In apparatus of the character described, in combination. a moldincluding two co operating and separable parts for receiving a moltenmetal, means pivotally mounting one of said parts with respect to theother whereby the action of gravity tends to said part away from theother part thereby to permit the discharge of the molded metal from saidparts, means for locking said parts together against the acgravity,means for dislocating the molded metal from one of said parts, andmanually operative means for substantially simultaneously unlocking saidlocking means and for operating said dislocating means.

the other, means for clamping said parts to gether, vmeans pivotallymounting said clamping means with respect to said parts whereby saidclamping means may be swung into or outofclamping position, and separate means for dislocating the molded metal from one of said parts.

8. In apparatus of the character described, in combination, a verticallyextending supporting member, a pair of mold members supported from saidmember, one on each side of said member and adapted to be moved towardor away from saidsupporting member, said supporting member .lforming aclosing member common to each of said mold members, means for clampingsaid members together, and means pirotally mounting said clamping meansupon said supporting member whereby said clamping means may be swunginto or out of clamping position with respect to said mold me1nbers.

9. In apparatus of the character described, in combination, a verticallyextending supporting member adapted to "form one part of a mold, asupporting bracket attached to the upper end of said supporting memberand extending away from said member, a main mold member adapted tocooperate with said supporting member to form a mold for receiving amolten metal, and means pivotally connecting said mold member to theouter end of said bracket.

10. In apparatus of the character described, in combination, avertically extending supporting member, a pair of supporting bracketsmounted at the upper end there-- of and extending away therefrom, a mainmold member adapted to -form with said supporting member a mold forreceiving a molten metal, a pair of arms secured to the upper end ofsaid mold member and extending away therefrom, means pivotallyconnecting said pair of supporting brackets and said pair of arms at theouter ends thereof whereby the action of gravitytends to swing said moldmember away from said supporting member, and means for securing saidmold member in operative relation to said supporting member.

In testimony whereof, I have signed my name to this specificationthisfourth day of November, 1921.

HENRY C. ZENKE.

